George Trudeau

Hey everyone,

I'd been experiencing an issue with my wife's 07' Q7 4.2 S-Line periodically. It seemed to have just gone away.... until this week. We went a good 2 months without a problem when it started happening this week, and twice this weekend. I have no idea what triggers it. I will start with a description, then ROSS-Tech log.

MIL VISUALS:
After driving it off and on during a couple hours of errands (for example), this all starts with an audible ESP fault & message center warning, simultaneously with the amber traction control light illuminating. Shortly after (less than a minute), the amber ride height indication illuminates, and then the engine light a few moments later.

BEHAVIORALLY:
The transmission appears to go to a full 50/50 front/rear power distribution mode. Purely an assumption, as what occurs is that on sharper turns the tires seem to bind as though the differentials are not slipping appropriately (for you older guys like me, or, drifters; it's like when you try to turn a tight corner with welded rear diff or live axles). In addition to this, and, MUCH more concerning, the transmission will down shift VERY aggressively... If you're holding a drink without a lid, it will end up everywhere. Upshifts fine... maybe a little delayed but smooth. When these series of faults occur, I put the car in neutral as I roll to a stop as I feel like it is torture on CV joints and transmission clutches. The engine, seems to run fine, though I keep getting MAF & lean codes with these particular events. Then MAF/Lean codes have been an off and on problem since I bought the car though. It runs fine though.

Once the vehicle cools down (overnight), the car seems to be fine. Lights are off, behaves fine.... like it never happened. The same cycle comes back eventually... It's like driving on eggshells- Totally erodes the driving experience for me. I have no idea what triggers this other than driving it too long. Could be a day.. could be a week, or 2 months. But it only happens after a lot of stop & go.

**Note: The car always turns over somewhat slow at first but then starts cranking faster (as it's turning over). Hard to explain- But when you first hit the start button, your first impulse is that the battery is low, but then it starts cranking faster right before it actually ignites. The whole process is only a couple seconds. Not sure if I have a battery issue??? But usually battery issues mean the car starts turning over slower as it cranks.. not faster. It's just an odd observation I thought was worth mentioning.

Anyhow, Below are the logs (I organized them with door & HVAC faults at the bottom- I don't really care about those right now).

Thanks in advance to anyone who has seen something similar and has a direction they can point me in!!
~George

-----------------------------------------------------------------------
Sunday,04,March,2018,13:17:08:47146
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.2.0.3 (x64) HEX-V2 CB: 0.4411.4
Data version: 20180212 DS287.0
Ross-Tech: Home

VIN: xxxxxxxxxxxxxxxxx License Plate:
Mileage: 196790km-122279mi Repair Order:
--------------------------------------------------------------------------------
Chassis Type: 4L (4L0)
Scan: 01 02 03 05 07 08 09 0E 15 16 17 19 28 34 36 37 3C 42 46 47
4F 52 55 56 61 62 65 67 6C 6D 6F 72 76 77

VIN: xxxxxxxxxxxxxxxxx Mileage: 196790km-122279miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
05-Acc/Start Auth. -- Status: Malfunction 0010
08-Auto HVAC -- Status: Malfunction 0010
28-HVAC, Rear -- Status: Malfunction 0010
34-Level Control -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: Malfunction 0010
61-Battery Regul. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: Malfunction 0010
-------------------------------------------------------------------------------
Address 01: Engine Labels:. 079-907-560-BAR.clb
Part No SW: 4L0 910 560 C HW: 4L0 907 560 A
Component: 4.2l V8/4V 0060
Revision: 71H21--- Serial number:
Coding: 01210009190F0560
Shop #: WSC 91445 999 84053
VCID: 280905E33EF899E71A8-807C

4 Faults Found:
008569 - Bank 2; System Too Lean off Idle
P2179 - 001 - - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 18
Reset counter: 255
Mileage: 195423 km
Time Indication: 0
Date: 2018.01.30
Time: 20:45:22

Freeze Frame:
RPM: 1697 /min
Load: 37.6 %
Speed: 11.0 km/h
Temperature: 95.0°C
Temperature: 46.0°C
Absolute Pres.: 1020.0 mbar
Voltage: 13.716 V

004105 - Mass Air Flow Sensor 1/2
P1009 - 004 - Implausible Signal from Load Calculation - MIL ON
Freeze Frame:
Fault Status: 11100100
Fault Priority: 0
Fault Frequency: 2
Reset counter: 255
Mileage: 196669 km
Time Indication: 0
Date: 2018.03.01
Time: 17:59:41

Freeze Frame:
RPM: 2706 /min
Load: 64.3 %
Speed: 33.0 km/h
Temperature: 99.0°C
Temperature: 26.0°C
Absolute Pres.: 980.0 mbar
Voltage: 14.097 V

000257 - Mass Air Flow Sensor (G70)
P0101 - 004 - Implausible Signal - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 3
Reset counter: 255
Mileage: 196669 km
Time Indication: 0
Date: 2018.03.01
Time: 17:59:42

Freeze Frame:
RPM: 2368 /min
Load: 72.5 %
Speed: 39.0 km/h
Temperature: 99.0°C
Temperature: 24.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.843 V

000267 - Mass Air Flow Sensor (G246)
P010B - 004 - Implausible Signal - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100100
Fault Priority: 0
Fault Frequency: 3
Reset counter: 255
Mileage: 196669 km
Time Indication: 0
Date: 2018.03.01
Time: 17:59:42

Freeze Frame:
RPM: 2368 /min
Load: 72.5 %
Speed: 39.0 km/h
Temperature: 99.0°C
Temperature: 24.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.843 V

Readiness: 0000 0000
-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 09D-927-750.lbl
Part No SW: 09D 927 750 FQ HW: 09D 927 750 FQ
Component: AL 750 6A 0999
Revision: 00H64000 Serial number:
Coding: 0000504
Shop #: WSC 31414 790 00001
VCID: 025D774BF80493B764C-8056

1 Fault Found:
01314 - Engine Control Module
013 - Check DTC Memory
Freeze Frame:
Fault Status: 00101000
Fault Priority: 2
Fault Frequency: 4
Reset counter: 0
Mileage: 0 km
Time Indication: 0
Date: 2006.05.10
Time: 12:00:01

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels:. 4L0-910-517-V2.clb
Part No SW: 4L0 910 517 B HW: 4L0 614 517 F
Component: ESP ALLRAD MK25E1 0010
Revision: 00H30001
Coding: 0021553
Shop #: WSC 00000 000 00000
VCID: 290F00E725F2A0EF056-807C

2 Faults Found:
00668 - Supply Voltage Terminal 30
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 2
Fault Frequency: 8
Reset counter: 139
Mileage: 195567 km
Time Indication: 0
Date: 2018.02.06
Time: 12:42:54

Freeze Frame:
Count: 192
Count: 9025
Count: 128
Count: 40960

01314 - Engine Control Module
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 2
Fault Frequency: 2
Reset counter: 111
Mileage: 196669 km
Time Indication: 0
Date: 2018.03.01
Time: 17:59:42

Freeze Frame:
Count: 9728
Count: 8193
Count: 8196
Count: 50944
------------------------------------------------------------------------------
Address 34: Level Control Labels: None
Part No SW: 4L0 910 553 C HW: 4L0 907 553
Component: LUFTFDR.-CDC H03 7660
Revision: --H03001 Serial number: 15.1528-0096.2
Coding: 0015510
Shop #: WSC 46668 573 00453
VCID: 2A0DFFEB20F4ABF70CC-807E

2 Faults Found:
01316 - ABS Control Module
013 - Check DTC Memory
Freeze Frame:
Fault Status: 11101101
Fault Priority: 3
Fault Frequency: 1
Reset counter: 113
Mileage: 196793 km
Time Indication: 0
Date: 2018.03.04
Time: 13:13:44

Freeze Frame:
Error Code: 98

01577 - Turn-Off due to Over-Temp
001 - Upper Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 6
Fault Frequency: 1
Reset counter: 147
Mileage: 196686 km
Time Indication: 0
Date: 2018.03.02
Time: 07:39:28

Freeze Frame:
Error Code: 68
-------------------------------------------------------------------------------
Address 61: Battery Regul. Labels: 4F0-910-181.lbl
Part No SW: 4L0 910 181 HW: 4L0 915 181
Component: J0644 BEM H12 0530
Revision: -------- Serial number: 00000000072907
Shop #: WSC 91445 999 64987
VCID: 649151D302503D87F60-8030

Subsystem 1 - Part No: 4F0 915 105 D
Component: von VA0 32100990Q8
Coding: 344630393135313035442056413033323130303939305138
Shop #: WSC 91445 999 06574

2 Faults Found:
02256 - Quiescent Current
001 - Upper Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00110001
Fault Priority: 7
Fault Frequency: 18
Reset counter: 151
Mileage: 195327 km
Time Indication: 0
Date: 2018.01.28
Time: 01:31:37

03041 - Energy Management Active
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 255
Mileage: 196275 km
Time Indication: 0
Date: 2018.02.21
Time: 13:23:50
-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. Labels:. 4F0-910-852.clb
Part No SW: 4F0 910 852 HW: 4F0 905 852 B
Component: FBSAUDIC6 ELV H31 0220
Revision: 31050601 Serial number: 10601100635235
Coding: 0000135
Shop #: WSC 31414 790 00001
VCID: 639352CF075E3ABF0FA-8036

Subsystem 1 - Part No: 4F0 910 131 L
Component: FBSAUDIC6 EZS H45 0080

Subsystem 2 - Part No: 4F0 910 335
Component: FBSAUDIC6 KSG H27 0080

2 Faults Found:
00191 - Passenger's Door Handle Touch Sensor (G416)
007 - Short to Ground
Freeze Frame:
Fault Status: 01110111
Fault Priority: 3
Fault Frequency: 1
Reset counter: 127
Mileage: 192863 km
Time Indication: 0
Date: 2017.11.13
Time: 07:33:21

00192 - Rear Left Door Handle Touch Sensor (G417)
007 - Short to Ground
Freeze Frame:
Fault Status: 01110111
Fault Priority: 3
Fault Frequency: 1
Reset counter: 127
Mileage: 192863 km
Time Indication: 0
Date: 2017.11.13
Time: 07:33:21
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: None
Part No SW: 4L0 910 043 HW: 4L0 820 043 F
Component: KLIMABETAETIGUNGH05 0060
Revision: 00---012 Serial number: 00000000093132
Coding: 0786472
Shop #: WSC 31414 790 00001
VCID: 619F58C71D4228AF1D6-8034

2 Faults Found:
01592 - Air Quality Sensor (G238)
014 - Defective
Freeze Frame:
Fault Status: 01101110
Fault Priority: 3
Fault Frequency: 174
Reset counter: 113
Mileage: 195373 km
Time Indication: 0
Date: 2018.01.29
Time: 18:14:46

Freeze Frame:
Temperature: 16.0°C

02508 - Temperature Sensor for Refrigerant (G454)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 126
Mileage: 192843 km
Time Indication: 0
Date: 2017.11.12
Time: 19:10:05
-------------------------------------------------------------------------------
Address 28: HVAC, Rear Labels: None
Part No SW: 4L0 910 158 HW: 4L0 919 158 D
Component: KLIMABETAETIGUNGH05 0060
Revision: 00---009 Serial number: 00000000092665
Coding: 0000006
Shop #: WSC 31414 790 00001
VCID: 688945E3FE7859E7DA8-803C

1 Fault Found:
01320 - Control Module for Climatronic (J255)
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 2
Fault Frequency: 1
Reset counter: 126
Mileage: 192843 km
Time Indication: 0
Date: 2017.11.12
Time: 19:11:55

Freeze Frame:
ON

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 4L0-910-793-42.lbl
Part No SW: 4L0 910 793 B HW: 4L0 959 793 B
Component: TSG FA H12 0130
Revision: 00-00000
Coding: 0051915
Shop #: WSC 31414 790 00001
VCID: 2F3BEEFF1B16CEDFDB2-807A

1 Fault Found:
02126 - Central Locking Button; Exterior Door Handle
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 3
Fault Frequency: 2
Reset counter: 158
Mileage: 192843 km
Time Indication: 0
Date: 2017.11.12
Time: 19:13:27

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels: 4L0-910-793-52.lbl
Part No SW: 4L0 910 793 B HW: 4L0 959 792 B
Component: TSG BF H12 0130
Revision: 00-00000
Coding: 0051915
Shop #: WSC 31414 790 00001
VCID: 2F3BEEFF1B16CEDFDB2-807A

1 Fault Found:
02126 - Central Locking Button; Exterior Door Handle
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 3
Fault Frequency: 8
Reset counter: 169
Mileage: 192843 km
Time Indication: 0
Date: 2017.11.12
Time: 19:14:35
-------------------------------------------------------------------------------
Address 62: Door, Rear Left Labels: 4L0-910-795.lbl
Part No SW: 4L0 910 795 B HW: 4L0 959 795 B
Component: TSG HL H21 0050
Coding: 0051722
Shop #: WSC 31414 790 00001
VCID: 313FE8870D22D82FCD6-8064

1 Fault Found:
02126 - Central Locking Button; Exterior Door Handle
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 111
Mileage: 196785 km
Time Indication: 0
Date: 2018.03.03
Time: 17:57:36

End----------(Elapsed Time: 02:29, VBatt start/end: 13.9V/13.9V)-----------

dreadlocks

Clear out all the codes and see what comes back, most of those are old, but it looks like your MAF might need cleaning/replacing.

flynavy

weird electrical issues will exhibit themselves in very odd ways when your battery has seen better days.

raj99

Hey George,

When's the last time you changed the diff, tranny fluids?

Greg5OH

From the D3 world, those audis do very strange things when the battery starts getting low. And the batteries dont last too long in them. i dont know how heavy the Q7 is on battry usage but if its anything like a D3, 4 years max out of a battery.
There are two door handles that are showing short to ground. Means it is drawing power all the time. A low batterty state may be described similar to what you expereince, crank starts slow then speeds up. Things are starting to move, oil is displacing and friction is starting to come down.
But yes, first clear codes, see what comes back.
You may need to do into each specific module and clear from there, as i foudn sometimes auto clear doesnt work on my S8 for all modules

George Trudeau

Clearing them is a weekly routine. They come back. Sometimes, with 2010 time stamps (which is odd).

dreadlocks

Not if your battery is ****, you should have that checked out asap then.

George Trudeau

Yeah I'm beginning to wonder about that too. Battery seemed fairly new but maybe someone didn't re calibrate after install. I have no idea how to do that and don't have the proper equiptment for it anyhow. Might need to bring it to a shop

George Trudeau

The transmission valve body was replaced in December. Filters & fluid completely replaced then.

George Trudeau

This is helpful, thank you. I am beginning to think the battery is indeed at least one of the issues. The lean & MAF codes i think may be a vacuum leak, which will need to be smoke tested. Just a theory though (Mafs are both replaced).

Thanks again!